Steam heating apparatus.



M. F. SMITH.

STEAM HEATING APPARATUS.

APPLIUATIOH FILED JUNE 11, 1903.

902,539. Patented Oct. 2'7, 1908.

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M. F. SMITH.

STEAM HEATING APPARATUS.

APPLIOATION FILED JUNE 11, 1903.

962,539, Patented Oct. 27, 1908.

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902,539. Patented Oct/27,1908.

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' iif'rnn srhrs ATENT orrion MARSHALL F. SMITH, F LOWELL, MASSACHUSETTS, ASSIGNOR TO EDDO V. BATES, OF LOWELL, MASSACHUSETTS.

HEATING APPARATUS.

No. chases.

1 Specification of Letters Patent.

Patented Oct. 27, 1908.

Application filed June 11, 1903." Serial No. 161,033.

Toni; whom 'it'moy concem:

Lowell, the county of Middlesex and Com-' I monwe'alth of Massachusetts, have invented a certain new and useful Improvement in Steam Heating Apparatus, of which the folv lowing is a specification.

, This invention relates to steam heating apparatus and its principal object is to secure a more perfect and uniform circulation of steam throughout the entire system of pipes and radiators and thereby to effect a saving of fuel.

This invention is applicable to apparatus in which steam is used at a low pressure or at a hi'g'l i pressure, and while a part of said invention servesa useful purpose in one-pipe systems, that is, systems in which the supply-pipe is used to return the water of condensation to the boiler, the best results. are attained by the use of the entire invention in systems having a s'eparat'eIreturn-pipe for each radiator.

Said invention consists in the devices and combinations hereinafter described and claimed. 1

In the accompanying drawing on three sheets, Figure 1 represents a steam heating apparatus embodying my invention, showing the main system of pipes and radiators in front elevation and a branch system in end elevation; Fig. 2, a front elevation of the branch system showingits connection With the main system; Fig. 3, a side elevation of the condensation-receiver and connected.

parts. w

The boiler A, doors'a a c 41 smoke-pipe C, the diaphragm D and connection with the ash-pit door a to regulate the draft and the radiators G G G are or may be all of any usual construction.

In this ap aratus the main supply-pipe H (Figs. 1: an 2) after risin vertically at h from the steam space of t e boiler A, descends by a sh ht inclination to the radiatorconnection or% boiler. The main drip-pipe I is connected to the end of 'the'supplypipe H at the feedriser g by the pipe t which is the beginning of the drip-pipe and said ipe I is thence inclined downward and bacl i to a standipe i, the lower end of'which enters the ho or below the wateidine, said stand-pipe i also pipe an the usua cod-riser gffarthest from the drip-pipe I enters the stand-pipe i above the forminga portion of the drip-piped Thewater-line of the boiler and said stand-pipe i, rises above the highest point of the drip pipe to form an air-chamber 'i, the upperv end of which is provided with an automatic air-valve i .of any approved construction el ranged to discharge above the lower end 0 the main supply pipe. This arrangement permits any air in the supply-pipe and the condensation Water therein to be disposed of before they reach the radiators, the water.

running through the supply-pipe and drippipe to the boiler and the air passing out through the air-chamber i and automatic air-valve t the air in the main or supply pipe being forced by the pressure of the steam beyond the lower end of the riserrfarr thest from the boiler and being carried, partly by the friction of the condensed water, to the stand-pipe through the smaller inclined drippassing out of said'valve.

Thesteam'enters the radiators G G from the supply-pipe throu h feed-risers g g in separate return-pipe which does not directly enter the boiler, but discharges into a con rising in'the stand-pipe, while the water .descends in said stand-pipe, the airmanner, expelling the air from said I densation-receiver K which may be common to all the return-pipes of the system.

Each return-pipe J J is provided with a check-valve L L just before it reaches the condensation-receiver K which prevents a back flow of water and air from said receiver, such as might be caused by the shutting oli' of a single radiator of the system and theformation of a partial vacuum in saidradiator and its return-pipe. The chepk-valve also -obviates the necessity of shuttin the corresponding return-vakvo g g whifshtherefore is rendered unnecessary except in case of accid'ent to the corresponding return-pipe or where necessity arises-for repairs or changes in said pipe or in the corresponding radiator.

In case of accident to the return-pipe-of any radiator, the return-valve, of said radiator may be closed and the feed-valve g g g left open and the radiator will continue to dl) its work, because .the water of condensation will then. return by. the supply-pipe and drippipe to the boiler as in a one-pipe s stem.

The condensation-receiver K is tubu arand inclined,'its lower end being attached to the upper end of a stand-pipe 7c which enters the boiler below the water-line and its upper end is provided with an automatic air-valve k which should be raised a few inches above the check-valves L L all oi which are arranged at the same level. All of the returnpipes J J 1 are'placed at the same inclination .and on a level with each other at their lower ends in order that the draft or flow of water ii-om all the radiators may be equal and that. thecn'culation may be uniform 1n ail the 113;.

diators of the system.

For convenience'of illustration the pipe J 2 is not shown in connection with the condensation-receiver in the enlarged view of Fig. 3, but is shown in Fig. 2.

None of the return-pipes should discharge Fig. 3, every section being provided at its upper end with a conical enlargement or seat 7c"- 7c adapted to 4 receive and fit the conical lower end 767 7c" ot the section next above and the end-portions of the sections being providedwith ears 7c it which may be connected by bolts 7; It and nuts 7c 7r in an obvious manner.

The uppermost section it of the condensation-receiver is merely a'reducer to which the automatic air valve k is connected by ineans of the pipe 7c in an obvious manner.

Matting the condensation-receiver in sections )crmits the return-pipes to be connecte .to the sections be'i'ore said sections are 'oined together.

T e radiator G? is represented as connected with the branch supply-pipe H and with a separat'edrip-pipe I which discharges into the stand-pipe '0 above the water line of the boiler A, said standipe i entering said boiler below the water-line and having a part i" abovethe lower end of said drippipe which serves as an-air-chamber and is provided with an automatic aievalve 7?, all these parts being of the same construction and for the same purpose as the similarly named parts previously described.

Both the main supplyzpipe H and the branch supply-pipe H ea out of the same vertical stand-pipe h, being connected thereto by short pipes, h h, each inclined at an angle of about stand-pipe to facilitate the passage of the steam.

The parts and connections of the radiator G are similar to those of the radiator GP marked by corresponding letters of reference with indicesless by one.

The return-pipe J also has a check-valve L and leads into the condensation-receiver 'K just as the-pipes J and J are abovedcscribed as doing.

Placing the air-valves of the drip-pipe above the lowest 'end of-the supply-pipe allows the escape of the air from said supplypipe through the drip-pipe and prevents pounding and obstruction-of circulation in both of said pipes. Arranging. an automatic air-valve on the condensation receiver above the highest point of said receiver allows air to escape from the return-pipe and prevents pounding in theradiators and return-pipes.

I claim as my invention 1. The combination of a boiler, aplurality of radiators connected therewith, a separate, downwardly inclined returnipe for each radiator, a check-valve in eacli return-pipe, an inclined condensation-receiver, into which all said return-pipes enter, said condensationreceiver being arranged above the water-line of said boiler and being connected withsaid boiler below said water-line, an air-chamber leading out of the upper-end of the condensation-receiver, and .an automatic air-valve leading out of said air -chamberand ar-- ranged above all said'check-valves.

2. The combination of a boiler, a plurality of radiators connected therewith, a separate return-pipe for each radiator, all-said returnpipes having an equal downward inclination, a check-valve in each return-pipe all'said check-valves being at the same level aninclined condensation-receiver, into which all said return-pipes enter, said receiver being arranged a ove the wateniine of said boilerand connected with said boiler below said water-line, and an airchamber leading out of said receiver and havin Y an automatic air-valve arranged above ail said check- .Valves.

In testimony whereof, I have aflixed my 115 signature, in presence of two witnesses.

MARSHALL F. SMITH. Witnesses:

ALBERT M. MOORE, ANNA T. HALLORAN.

fprty-five degrees to said 

